Simple Netduino Project – Toggle LED

toggleled.cs

using Microsoft.SPOT.Hardware;
using Netduino = SecretLabs.NETMF.Hardware.Netduino;

namespace ToggleLED
{
    /// <summary>
    /// Toggle the Netduino LED on/off based on a button press.
    /// </summary>
    public class Program
    {
        /// <summary>Main</summary>
        public static void Main()
        {
            bool isOn = false; // initial state of LED
            bool lastButtonState = true; // assume button initially not pressed

            // Create our LED/Button objects
            OutputPort led = new OutputPort(Netduino.Pins.ONBOARD_LED, isOn);
            InputPort button = new InputPort(Netduino.Pins.ONBOARD_SW1, false, Port.ResistorMode.Disabled);            

            // Loop forever reading the button and turning on/off the LED
            while (true)
            {
                bool buttonState = button.Read();

                // Toggle light only if the Button is pushed
                if (buttonState != lastButtonState && !buttonState)
                {
                    isOn = !isOn;
                    led.Write(isOn);
                }

                // Store current state as last state
                lastButtonState = buttonState;
            }
        }
    }
}